George Gkouvousis

Simple, yet efficient plugin, in order to keep only posts in your search results. Pages, custom post types and every other type, will be excluded from your WordPress search queries.
Just upload the plugin and activate it. It will take take care of the rest.
* Keep in mind that this plugin works with the default WordPress search engine.

Remove Pages From Search

Tired of search for an one-click solutions for your search results? This plugin will exclude everything except posts from your website's search r …

The Krotek

If you have an IPS Community Suite (former IP.Board) based forum, this extension is a must. It’ll allow your vititors to search for forum posts and topics right from your WordPress site. A lot of options, available in Premium version, will also give you full control on search process.
STANDARD FEATURES
<ul>
<li>Compatible with all versions of IPS Community Suite 4.</li>
<li>Allows you to search for IP.Board (IPS Community) content from WordPress.</li>
<li>Follows IP.Board SEF URLs structure.</li>
<li>Applies all necessary WordPress filters to search results.</li>
<li>Template independent.</li>
</ul>
PREMIUM FEATURES
<ul>
<li>Limit number of search results (useful for large databases).</li>
<li>Sort results by topic title, number of views or post date.</li>
<li>Search for exact phrase or any keyword from the list.</li>
<li>Position results before or after WordPress posts. Or even replace them!</li>
<li>Limit search by topic titles only (useful for large databases).</li>
<li>Search in member names as well.</li>
<li>Include closed topics in search results.</li>
<li>Show or hide parent Forum category before topic name.</li>
<li>Set custom thumbnail for search results.</li>
<li>Exclude forums from search results or include only certain forums.</li>
</ul>
You can purchase Premium version <a href="https://thekrotek.com/wordpress-extensions/ipboard-search" rel="nofollow ugc">here</a>.

IP.Board Search

Allows you to search for IPS Community Suite (former IP.Board) topics and posts right from WordPress.

Remove Pages From Search vs IP.Board Search